WASTE STREAM 2Y51 Analytical Services Process Facilities - North Labs

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1 WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs SITE SITE OWNER WASTE CUSTODIAN WASTE TYPE Sellafield Nuclear Decommissioning Authority Sellafield Limited LLW WASTE VOLUMES Stocks: At Future arisings Total future arisings: 1.3 m³ Comment on volumes: WASTE SOURCE PHYSICAL CHARACTERISTICS General description: Physical components : Bulk density (t/m³): ~6.0 Comment on density: CHEMICAL COMPOSITION Estimated to be made up of equal quantities of lead, concrete and stainless steel, disposal container will have to have appropriate SWL. 33.3% Lead, 33.3% Concrete, 33.3% Metal. 0 m³ Total waste volume: 1.3 m³ Uncertainity factors on volumes: m³ m³ m³ Rate is constant for LLW during dismantling and final remediation stage. Volumes based on engineering judgement and Plant Status Report. Stock (upper): x Arisings (upper) x Stock (lower): x Arisings (lower) x The waste generated will be by decommissioning project, probably by remote means. Baseline assumption of area 2m³ lead, 2m³ concrete and 2m³ stainless steel. General description and components (%wt): Chemical state: Chemical form of radionuclides: Lead ~59%, Concrete ~10%, Stainless steel ~30%. Probably acidic as samples were from Thorp/Magnox reprocessing. Tc99: Trace contamination can't be confirmed until characterisation is completed. Pu: Trace contamination can't be confirmed until characterisation is completed. Metals and alloys (%wt): Not known. Bulk items 50% 100mm x 100mm x 50mm (Chevron blocks) 50% Sheet 1m x 100mm x 5mm. Inorganic anions (%wt): Stainless steel... ~~30.0 Bronze... ferrous metals... Aluminium... Copper... Lead... ~~59.0 Inconel... Nimonic... Stellite... Boral... Zinc... Magnox/Magnesium... Dural... Monel... Zircaloy... Uranium... Brass... Beryllium... metals (below)... metals: Small allowance made to nitrates due to nitric acid based process. Fluoride... Chloride... Iodide... Cyanide... Carbonate... Nitrate... <0.10 Nitrite... Phosphate... Sulphate... Sulphide... Listed substances: Hazardous and problematic materials (%wt): Lead weight 15 66% packing.

2 WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs Asbestos types and proportions: Complexing agents (%wt): Combustible metals... Low flash point liquids... Explosive materials... Phosphorus... Hydrides... Putrescible wastes... Biological etc. materials... Powder... Not yet determined. Complexing agents... Organics (%wt): Total cellulosics... Paper, cotton... Wood... Halogenated plastics... Total nonhalogenated plastics... Condensation polymers... s... Organic ion exchange materials... Total rubber... Halogenated rubber... Nonhalogenated rubber... organics... Halogenated plastics and rubber (%wt): Strong oxidising agents... Pyrophoric materials... Generating toxic gases... Reacting with water... Asbestos... Free aqueous liquids... Free nonaqueous liquids... NE materials (%wt): LLW TREATMENT AND DISPOSAL Concrete from cell plinth and floors etc. Inorganic ion exchange materials.. Inorganic sludges and flocs... Soil... Rubble... Concrete, cement and sand... ~~10.0 Glass... Ceramics... Graphite... Status of waste: Characterisation Form (WCF): Expected to be consigned to the LLWR. The waste does not meet the LLWR's Acceptance Criteria (WAC). Lead requires special authorisation which will be applied for in due course. consigned in year of generation: Yes. Treatments already carried out: Treatment treated Volume change factor Low force compaction Supercompaction (HFC) Incineration Encapsulation Metal decontamination Metal melting None Comment on treatments already carried out:

3 WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs Further treatments planned: Treatment treated Low force compaction Supercompaction (HFC) Incineration Encapsulation Metal decontamination Metal melting None Volume change factor Comment on further treatments: Category of waste after further planned treatments: Comment on category of waste: Category High force compactable waste Uncompactable waste in disposal containers Large items for direct invault grouting Not yet determined All waste will be uncompactable on current estimates. High Force Compactable Density bands: information: density (t/m³) < > 1.2 Not analysed by density Uncompactable in Disposal Containers Disposal container type: (Not applicable to this waste stream) Container Third height ISO Half height ISO 4m box (no shielding) 2m box (no shielding) Inaccessible voidage: Estimated at < 10%. information: Large Items For Direct InVault Grouting Bounding cuboidal volume (m³): Inaccessible voidage: information: RADIOACTIVITY (Not applicable to this waste stream) 200litre drums Loose loading (m³) Source: Accuracy: Definition of total alpha and total beta/gamma: Measurement of specific activities: Contamination from the Reprocessing Pilot plant and resultant decommissioning process, mostly from fuel contamination. characterisation is not complete. The radionuclide spectrum from a similar ILW stream has been used to identify which nuclides are likely to be present, enabling indicative codes to be specified for a number of nuclides. The likely presence and significance of specific nuclides has been deduced by analysis of another waste stream arising from similar sources. (PS1 (35/05391) this is a current ILW stream from the analytical labs). This will be confirmed and quantified when this lab has been characterised as part of the decommissioning project.

4 WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs information: Not known until characterisation is completed.

5 WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs Nuclide at Average specific activity, TBq/m³ Bands and Future arisings Bands and H 3 Be 10 C 14 Cl 36 Ar 39 Ar 42 K 40 Ca 41 Mn 53 Mn 54 Fe 55 Co 60 Ni 59 Ni 63 Zn 65 6 Se 79 Kr 81 Kr 85 Rb 87 Sr 90 7 Zr 93 Nb 91 Nb 92 Nb 93m Nb 94 Mo 93 Tc 97 Tc 99 6 Ru 106 Pd 107 Ag 108m Ag 110m Cd 109 Cd 113m Sn 119m Sn 121m Sn 123 Sn 126 Sb 125 Sb 126 Te 125m Te 127m I Cs 134 Cs 135 Cs Ba 133 La 137 La 138 Ce 144 Pm 145 Pm 147 Sm 147 Sm 151 Eu Eu 154 Eu 155 Gd 153 Bands (Upper and Lower) A a factor of 1.5 B a factor of 3 C a factor of 10 D a factor of 100 E a factor of 1000 Note: Bands quantify uncertainty in the average specific activity. Nuclide at Average specific activity, TBq/m³ Bands and Future arisings Bands and Ho 163 Ho 166m Tm 170 Tm 171 Lu 174 Lu 176 Hf 178n Hf 182 Pt 193 Tl 204 Pb 205 Pb 210 Bi 208 Bi 210m Po 210 Ra 223 Ra 225 Ra 226 Ra 228 Ac 227 Th 227 Th 228 Th 229 Th 230 Th 232 Th 234 Pa 231 Pa 233 U 232 U 233 U 234 U 235 U 236 U 238 Np 237 Pu 236 Pu 238 Pu 239 Pu 240 Pu Pu 242 Am 241 Am 242m Am 243 Cm 242 Cm 243 Cm 244 Cm 245 Cm 246 Cm 248 Cf 249 Cf 250 Cf 251 Cf 252 a b/g Total a 0 NE Total b/g 0 NE 1 Measured activity 2 Derived activity (best estimate) 3 Derived activity (upper limit) 4 Not present 5 Present but not significant 6 Likely to be present but not assessed 7 Present in significant quantities but not determined 8 Not expected to be present in significant quantity

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